How just how Royale your Battle skills are Surviv.io, a game heavily inspired by the likes of H1Z1, PUBG, and Fortnite Battle Royale. Choose to play solo, duo, or form a team, and then try your best to top the leaderboard.
Movement: W, A, S, D
Aim: Mouse
Punch/Shoot: Left-Click
Swap Weapons: 1 and 2
Stow Weapons (Punch Mode): 3 or E
Reload: R
Scope Zoom: Scroll Wheel or Click on Zoom
Pickup/Loot: F
Use Medical Item: Left-Click on Item
Drop Item: Right-Click on Item
Cancel Action: X
View Map: M or G
Toggle Minimap: V
The map is much smaller in Surviv.io than in its 3D brethren. It's quite action packed, and you'll likely run around like a chicken with your head cut off looking for look in the hopes of holding your own for more than a few seconds.